802 
BULLETIN OF THE BUREAU OF FISHERIES 
and 10046), though that of the surface had increased from 31.67 to 31.92 per mille 
to 32.67 per mille during the interval, is proof that the autumnal progression also 
reflected an indraft of more saline water over the rim. 
Some salting of the whole column of water is to be expected, therefore, at the 
mouth of Massachusetts Bay during the late autum, besides the increase at the sur- 
face that stirring by tidal currents would, of itself, effect at this season. Although 
this alteration was not continuous in 1912, when salinity was almost precisely the 
same on December 4 as it had been on November 20 at the station in question, 6 it 
Fig. id.—' Vertical distribution of salinity in the Bay of Fundy between Grand Manan and Nova Scotia, in various 
months, from Mavor’s table (Mavor, 1923, p. 375, Prince station 3). A, July 31, 1917; B, October 2, 1917; C, December 
5, 1917; D, January 19, 1918; E, December 2, 1916; F, January 3, 1917 
raised the salinity of the entire column (now homogeneous, surface to bottom) to 
about 32.75 per mille by the 23d of that month. 
Mavor (1923) also records a considerable increase in the salinity of the upper 
strata of the Bay of Fundy from October 4, 1916, through November, although the 
bottom water continued virtually unchanged throughout that autumn. The verti- 
cal distribution for October 4 of that year 7 is especially interesting, the salinity being 
highest at 50 meters, with less saline water below it as well as above, and with a 
very abrupt increase near the bottom. A distribution of this sort, decidedly unusual 
8 32.56 per mille at the surface and at 46 meters; 32.61 per mille near bottom in 70 meters depth. 
7 10 meters, 31.9 per mille; 50 meters, 32.6 per mille; 75 meters, 32.4 mille; 150 meters, 32.5 per mille; and 175 meters, 33 per 
mille. 
